BackForwardInstrument:  EIT 

Instrument details
Acronym EIT
Full name Extreme UV Imaging Telescope
Purpose Observation of the evolution of low coronal structure and activity
Short description Operating on four selected spectral emission lines from Fe IX (17.1 nm), Fe XII (19.5 nm), Fe XV (28.4 nm), and He II (30.4 nm) to provide sensitive temperature diagnostics in the range from 60,000 to 3,000,000 K
Background Part of a package of instruments to observe the solar atmosphere
Scanning Technique Sun pointing from the L1 Lagrange libration point. Corona view included
Resolution 750 km at sun surface
Coverage / Cycle Full Sun disk in 90 s
Mass Power Data Rate 1 kbps

 

Providing Agency NASA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1996 to ≥2020
Last update: 2017-05-19
Detailed characteristics
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Solar and space environment monitors
  • Solar activity monitor
Mission objectives
Primary mission objectives
  • Solar EUV image
Secondary mission objectives
  • Solar EUV flux
Opportunity objectives
  • Solar coronagraphic image
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Tentative Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
VariableRelevance for measuring this variableOperational limitationsExplanation
Solar EUV flux4 - fairNo specific limitation.Few channels, moderate dynamic range, full solar disc and corona
Solar EUV image3 - highNo specific limitation.Fluxmetry with high spatial resolution, corona view included
Solar coronagraphic image3 - highNo specific limitation.EUV (10-121.6 nm), observed with occultation